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991.
992.
张谷英村乡土建筑的开放空间艺术特色 总被引:1,自引:1,他引:0
湖南张谷英村是中国乡土建筑中的一朵奇葩.张谷英村乡土建筑的开放空间体系由三个空间层次构成,在整体环境空间层次上,开放空间艺术处理注重因借自然,尊重自然;在村落内部功能空间层次上,则注重步随景移,开合有度;在大屋内部空间层次上,重视“灰空间”的承转过渡,内外渗透.开放空间的合理布局,使古村的户外生活变得格外轻松自如和温馨祥和.张谷英村的开放空间营建策略和艺术处理手法在当代聚落规划中值得借鉴. 相似文献
993.
On 23 July 2009, a catastrophic debris flows were triggered by heavy rainfall in Xiangshui gully, Kangding county, southwestern China. This debris flow originating shortly after a rainstorm with an intensity of 28 mm per hour transported a total volume of more than 480×103 m3 debris, depositing the poorly sorted sediment including boulders up to 2-3 m in diameter both onto an existing debris fans and into the river. Our primary objective for this study was to analyze the characteristics of the triggering ra... 相似文献
994.
995.
In this paper, we conduct a new statistical study on the temporal distribution of the Global Positioning System Total Electron Content (GPS TEC) anomalies prior to the earthquakes with magnitude M≥7.0 in the global area during 2003–2012 by the method of statistical analysis. The temporal distribution of the ionospheric TEC anomalies prior to the earthquakes with magnitude M≥7.0 is for the first time studied. It has been observed that the ionospheric negative anomalies mainly occur in one week prior to the earthquakes, and only when the magnitude is greater than or equal to 7.6, the ionospheric anomalies will have the greatest probability of occurrence in the afternoon to sunset (i.e. between 12:00 and 18:00 local time). They last for approximate 2 hr, but the chance of detecting the significant enhancement in the ionospheric TEC seems not to be a function of time and there is no clear tendency for positive anomalies. In addition, the relationship of the occurrence rate of pre-earthquake ionospheric anomalies and the magnitude of the earthquake is discussed, and it is found that the observed ionospheric TEC anomalies within several days before the earthquakes are highly likely to be related with the earthquakes because the occurrence rate of pre-earthquake ionospheric anomalies seems to increase slightly with the earthquake magnitude increasing. 相似文献
996.
China will establish a 2-meter space-based astronomical telescope. Its main science goals are performing a sky survey for research about dark matter and dark energy, and high resolution observations. Some experts suggest that this space telescope should be installed inside the Chinese space station. In accord with this suggestion we put forward our first configuration, i.e., to adopt a coud′e system for this telescope.This coud′e system comes from the Chinese 2.16 m telescope's coud′e system, which includes a relay mirror so that excellent image quality can be obtained. In our second configuration, we suggest that the whole space telescope fly freely as an independent satellite outside the space station. When it needs servicing, for example, changing instruments, refilling refrigerant or propellant, etc., this space telescope can fly near or even dock with the core space station. Although some space stations have had accompanying satellites, the one we propose is a space telescope that will be much larger than other accompanying satellites in terms of weight and volume. On the basis of the second configuration, we also put forward the following idea: the space station can be composed of several large independent modules if necessary. 相似文献
997.
Wei-Bin Wen Fang Wang Chun-Lai Li Jing Wang Li Cao Jian-Jun Liu Xu Tan Yuan Xiao Qiang Fu Yan Su Wei Zuo 《中国天文和天体物理学报》2014,(12)
The Moon-based Ultraviolet Telescope(MUVT) is one of the payloads on the Chang'e-3(CE-3) lunar lander. Because of the advantages of having no atmospheric disturbances and the slow rotation of the Moon, we can make long-term continuous observations of a series of important celestial objects in the near ultraviolet band(245~340 nm), and perform a sky survey of selected areas, which cannot be completed on Earth. We can find characteristic changes in celestial brightness with time by analyzing image data from the MUVT, and deduce the radiation mechanism and physical properties of these celestial objects after comparing with a physical model. In order to explain the scientific purposes of MUVT, this article analyzes the preprocessing of MUVT image data and makes a preliminary evaluation of data quality. The results demonstrate that the methods used for data collection and preprocessing are effective, and the Level 2A and 2B image data satisfy the requirements of follow-up scientific researches. 相似文献
998.
999.
The analysis of the protein and carbohydrate in P-POM (Plankton and Particulate Organic Matter) samples collected from the fishing ground in Minnan-Taiwan Bank in five voyages (April, June, July, August and November, 1988) shows that the protein and carbohydrate contents and amounts in samples from four stations (501, 401, 301, 201) along the coast and another four stations (404, 304, 403, 204) south and southeast of the shoal were higher than those in April and November, indicating that this phenomenon is related to the upwelling in the two regions in summer . 相似文献
1000.
This study on the nutritive indexes (total nitrogen, amino acids, crude fats, inorganic elements, unsaturated fatty acids)
of meat, male and female reproductive gland ofPortunus trituberculatus showed that their nutritive value is in the order meat>female reproductive gland>male reproductive gland and that they do
not raise the total cholesterol (TC) and triglyceride (TG) contents of the serum of the animals which eat them but increase
the contents of high density lipoprotein cholesterol (HDL-C) in the animal's blood. These findings implied that people who
have high blood lipid and aortic atheroma can safely use them as food. This study showed thatP. trituberculatus has high nutritive value. 相似文献